Chivas USA goalkeeper Zach Thornton has been selected to replace Houston Dynamo goalkeeper Pat Onstad on the MLS All-Star team. Onstad strained his back in a 1-0 loss to New England on Saturday night. Thornton is second in the MLS in shutouts (seven) and third in goals-against average (0.88) and went 401 minutes without allowing a goal from April 22 to May 16. He has played every minute of every league game for Chivas USA. This is the sixth All-Star selection for the 13-year MLS veteran and the first since 2003 when he was a member of the Chicago Fire.